Sound Transmission Class (STC) is an integer rating of how well a building partition attenuates airborne sound. In the US, it is widely used to rate interior partitions, ceilings, floors, doors, …

Nov 30, 2025 · When people are evaluating building materials and acoustical products for sound reduction, they rely on the sound transmission class or STC rating of the product.

Nov 26, 2025 · Learn what STC rating (Sound Transmission Class) means for walls, windows, doors, and floors. Discover how to read STC charts, meet building code requirements, boost …

Oct 10, 2025 · STC stands for Sound Transmission Class. It is a rating system that classifies the airborne sound isolation provided by a building element/partition. Simply put, STC is a single …

The Sound Transmission Class (STC) rating shows how well a building partition blocks airborne sound. It’s key for architects, builders, and homeowners wanting better sound comfort in …

Aug 20, 2025 · But what exactly is an STC rating, and why does it matter when you choose soundproofing solutions? This guide explains everything you need to know about Sound …

The Sound Transmission Class (STC) is a single-number rating of a material's or an assembly's ability to resist airborne sound transfer at the frequencies 125-4000 Hz.

STC ratings are intended for the fair comparison of sound isolation performance provided by architectural building products and systems. The higher the STC rating, the better the material …

Dec 7, 2023 · There are many factors that influence sound transmission class (STC) ratings, and it’s important to understand and plan for these nuances. This article will explain STC ratings, …

STC rating, or Sound Transmission Class, is a critical metric used to measure how effectively a building assembly—like a wall, floor, or door—blocks sound transmission, especially speech …